Riffraff Diesel 6637 Replacement Intake Filter for Ford 7.3L 94-03
We suggest buying them in quantities of 2 as your shipping won't increase much and you will save money.
100% Made in USA
156 Reviews Hide Reviews Show Reviews
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5 Riffraff 6637 air filter
Posted by JASON DELOOZE on Feb 11th 2025
Fast shipping, quality is good and can't beat ordering couple at same time.
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5 6637
Posted by Steve on Oct 15th 2024
As good as expected. Fair price, and good shipping.
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5 Great Filter
Posted by Trevor H on Apr 12th 2023
I have used these filters for a number of years and they are a great upgrade for 7.3 Powerstrokes
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5 6637 Air Filter
Posted by Mark on Jan 27th 2023
A great product. It helps my 7.3 breathe, gives her all the air she needs. The RiffRaff cover is nice too!
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5 filter
Posted by George on Jan 16th 2023
The perfect filter for my 7.3
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5 Air filter
Posted by Aaron on Sep 6th 2022
Very well made and a great price. I will definitely be purchasing more when I need it.
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5 Donaldson replacement air filter
Posted by Daniel May on Jun 5th 2022
It's an air filter. Undamaged and exactly what was already on the truck. Minimal tools and time to swap out.
The entire kit was the same, simple and quick.
I would not ever run it without the outerwear skin but it probably says that when you purchase the "kit" package. -
5 6637 REPLACEMENT FILTER
Posted by Erik Bishop on Mar 30th 2022
Fit perfect,
order arrived to my house in record time. -
5 Worthwhile
Posted by Larry on Mar 20th 2022
Cheap and works great
